Filtreler

2011 - 201922020 - 20211
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Ayarlar

Yazar: Kırış, Ahmet × Bölüm: Işık University, Faculty of Engineering, Department of Civil Engineering ×

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Listeleniyor 1 - 3 / 3
  • Küçük Resim
    Yayın
    Thermo-microstretch elastic bodies and plane waves
    (IOP PUBLISHING LTD, 2011) İnan, Esin; Kırış, Ahmet
    In the present work, vibration problems of rectangular plates are considered for the determination of upper bounds to the unknown microstretch material properties. The frequencies are obtained by extending the Ritz method to this case. The analysis shows that some additional frequencies characterizing the microstretch effects appear among the classical frequencies. Furthermore, by the increasing values of the microstretch constants, the additional frequencies disappear and only the classical frequencies remain in the spectrum. Considering this phenomenon, an optimization problem is established for the identification of the upper bounds of microstretch elastic constants. In the second part of the work, thermal effects are considered and several theories are discussed. Finally, propagation of the plane waves is investigated.
  • Küçük Resim
    Yayın
    A hollow cylinder problem in microstretch theory
    (Springer-Verlag, 2011) İnan, Esin; Kırış, Ahmet
    A hollow cylinder micro-damaged tube under pressure problem is discussed. Micro damage is modeled with Eringen's microstretch theory and the displacement and its comparison with classical result are given.
  • Küçük Resim
    Yayın
    Free vibration of composite sandwich beams with microstretch viscoelastic core
    (Springer Science and Business Media Deutschland GmbH, 2021) Aydınlık, Soner; Kırış, Ahmet; İnan, Esin
    In the present work, we studied a sandwich beam which is made of two thin stiff layers on top and bottom and a microstretch viscoelastic core in the middle. Here, the top and the bottom stiff layers are considered as elastic, while the inner part is taken as microstretch viscoelastic material. The free vibration of this composite beam is investigated. Differential transform method is used for the solution. The values of the frequencies obtained for microstretch case are found greater than the classical ones, as it is expected. Besides, the minimum differences between the classical frequencies and deviated classical frequencies due to the microstretch core are getting bigger for the large loss factors.